package com.example.gobang.game;

import com.example.gobang.GobangApplication;
import com.example.gobang.model.User;
import com.example.gobang.model.UserMapper;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import lombok.Data;
import lombok.Getter;
import lombok.Setter;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.web.socket.TextMessage;
import org.springframework.web.socket.WebSocketSession;

import java.io.IOException;
import java.util.UUID;

/**
 * author: hyacinth
 * Date: 2023/5/26
 */
@Data
public class Room {

    // @Autowired
    private OnlineUserManager onlineUserManager;

    // @Autowired
    private RoomManager roomManager;

    private UserMapper userMapper;

    private String roomId;
    private User user1;
    private User user2;
    private ObjectMapper objectMapper = new ObjectMapper();

    private int whiteUser;
    public Room() {
        // 使用 UUID 作为房间id
        roomId = UUID.randomUUID().toString();
        onlineUserManager = GobangApplication.context.getBean(OnlineUserManager.class);
        roomManager = GobangApplication.context.getBean(RoomManager.class);
        userMapper = GobangApplication.context.getBean(UserMapper.class);
    }

    // 表示棋盘
    // 0: 未落子
    // 1: user1的落子
    // 2: user2的落子
    private int[][] board = new int[15][15];

    /**
     * 处理一次落子请求
     * @param jsonString
     */
    public void putChess(String jsonString) throws IOException {
        //  1. 记录当前落子的位置
        GameRequest request = objectMapper.readValue(jsonString,GameRequest.class);
        GameResponse response =  new GameResponse();
        // 当前落子是玩家1还是玩家2
        int chess = request.getUserId() == user1.getUserId() ? 1 : 2;
        int row = request.getRow();
        int col = request.getCol();
        if (board[row][col] != 0){
            System.out.println("当前位置已经有棋子了!");
            return;
        }
        board[row][col] = chess;
        printBoard(board);
        // 2. 进行胜负的判定
        int winner = checkWinner(row,col,chess);
        // 3. 给客户端返回响应
        response.setMessage("putChess");
        response.setUserId(request.getUserId());
        response.setCol(col);
        response.setRow(row);
        response.setWinner(winner);

        WebSocketSession session1 = onlineUserManager.getSessionFromGameRoom(user1.getUserId());
        WebSocketSession session2 = onlineUserManager.getSessionFromGameRoom(user2.getUserId());
        if (session1 == null){
            response.setWinner(user2.getUserId());
            System.out.println("玩家掉线");
        }
        if (session2 == null){
            response.setWinner(user1.getUserId());
            System.out.println("玩家掉线");
        }
        if (session1 != null){
            session1.sendMessage(new TextMessage(objectMapper.writeValueAsString(response)));
        }
        if (session2 != null){
            session2.sendMessage(new TextMessage(objectMapper.writeValueAsString(response)));
        }

        // 4.如果当前胜负已分,游戏房间就没用了
        if (response.getWinner() != 0){
            System.out.println("游戏胜负已分!");
            int winUserId =  response.getWinner();
            int loseUserId = response.getWinner() == user1.getUserId() ? user2.getUserId() : user1.getUserId();
            userMapper.UserWin(winUserId);
            userMapper.UserLose(loseUserId);
            roomManager.remove(roomId,user1.getUserId(),user2.getUserId());
        }
    }

    /**
     * 胜负判定
     * @param row
     * @param col
     * @return
     */
    private int checkWinner(int row, int col,int  chess) {
        // 检查所有的行
        for (int i = col-4; i <= col ; i++) {
            try {
                if (board[row][i] == chess
                        && board[row][i+1] == chess
                        && board[row][i+2] == chess
                        && board[row][i+3] == chess
                        && board[row][i+4] == chess){
                    return chess == 1 ? user1.getUserId() : user2.getUserId();
                }
            } catch (ArrayIndexOutOfBoundsException e) {
                continue;
            }
        }

        // 检查所有列
        for (int i = row-4; i <= row ; i++) {
            try {
                if (board[i][col] == chess
                        && board[i+1][col] == chess
                        && board[i+2][col] == chess
                        && board[i+3][col] == chess
                        && board[i+4][col] == chess){
                    return chess == 1 ? user1.getUserId() : user2.getUserId();
                }
            } catch (ArrayIndexOutOfBoundsException e) {
                continue;
            }
        }

        // 左对角线
        for (int i = row-4,j = col-4; i <= row; i++,j++) {
            try {
                if (board[i][j] == chess
                && board[i+1][j+1] == chess
                && board[i+2][j+2] == chess
                && board[i+3][j+3] == chess
                && board[i+4][j+4] == chess){
                    return chess == 1 ? user1.getUserId() : user2.getUserId();
                }
            }catch (ArrayIndexOutOfBoundsException e){
                continue;
            }
        }
        // 右对角线
        for (int i = row-4,j =col+4;i <= row ;i++,j--){
            try {
                if (board[i][j] == chess
                && board[i+1][j-1] == chess
                && board[i+2][j-2] == chess
                && board[i+3][j-3] == chess
                && board[i+4][j-4] == chess){
                    return chess == 1 ? user1.getUserId() : user2.getUserId();
                }
            }catch (ArrayIndexOutOfBoundsException e){
                continue;
            }
        }
        // 胜负未分

        return 0;
    }
    private final int Max_row = 15;
    private final int Max_col = 15;
    private void printBoard(int[][] board){
        System.out.println("roomId: "+roomId);
        System.out.println("------打印棋盘信息------");
        for (int i = 0; i < Max_row; i++) {
            for (int j = 0; j < Max_col; j++) {
                System.out.print(board[i][j]+" ");
            }
            System.out.println();
        }
        System.out.println("---------------------");
    }
}
